J/other/IBVS/6137 New variables in M5 (NGC 5904) (Arellano Ferro+, 2015)
New variables in M5 (NGC 5904) and some identification corrections.
Arellano Ferro A., Bramich D.M., Giridhar S., Luna A., Muneer S
=2015IBVS.6137....1A 2015IBVS.6137....1A
ADC_Keywords: Clusters, globular ; Stars, variable ; Photometry
Keywords: globular clusters: individual: M5 (NGC 5904) -
stars: variables: RR Lyrae
Abstract:
We report twelve variables not previously detected in the globular
cluster M5 (NGC 5904); one SX Phe and eleven semi-regular variables
(SR). Their identifications, equatorial coordinates, ephemerides, and
light curves are given. Furthermore, we have explored the light curves
of a group of stars whose variability has not been confirmed and that
are marked as probable non-variables in the CVSGC. Finally, we offer
detailed identifications for some of the known variables in crowded
regions that were misidentified in previous studies. We shall also
address the cases of the cataclysmic variable or U Gem type V101 and
of the variable blue straggler V159.
Description:
VI time-series photometry of stars with no confirmed variability,
stars with corrected classifications and identification and of newly
discovered variables (V170-V181) in M5 (NGC 5904).
Objects:
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RA (2000) DE Designation(s)
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15 18 33.22 +02 04 51.7 NGC 5904 = GCl 34
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 50 44 List of studied variables
table4.dat 78 12 New variable stars found in M5, V170-V181
table1.dat 84 32413 Time-series V and I photometry for all stars
discussed in this paper
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Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- VName Variable name
6- 7 I2 h RAh Simbad Right ascension (J2000.0)
9- 10 I2 min RAm Simbad Right ascension (J2000.0)
12- 16 F5.2 s RAs SImbad Right ascension (J2000.0)
18 A1 --- DE- Simbad Declination sign (J2000.0)
19- 20 I2 deg DEd Simbad Declination (J2000.0)
22- 23 I2 arcmin DEm Simbad Declination (J2000.0)
25- 28 F4.1 arcsec DEs Simbad Declination (J2000.0)
30- 50 A21 --- Simbad Simbad name
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- VName Variable name (V170 to V181)
6- 11 A6 --- VType Variable type (SX Phe or SRA)
13- 14 I2 h RAh Right ascension (J2000.0)
16- 17 I2 min RAm Right ascension (J2000.0)
19- 23 F5.2 s RAs Right ascension (J2000.0)
25 A1 --- DE- Declination sign (J2000.0)
26- 27 I2 deg DEd Declination (J2000.0)
29- 30 I2 arcmin DEm Declination (J2000.0)
32- 35 F4.1 arcsec DEs Declination (J2000.0)
37- 46 F10.6 d Per [0.08/142]?=- Period
48- 56 F9.4 d Epoch ?=- Epoch of ephemeride
58- 62 F5.2 mag <Vmag> [12/16] Mean V magnitude
64- 68 F5.2 mag <Imag> [10/16] Mean I magnitude
70- 73 F4.2 mag Vamp [0.07/0.57] V band amplitude
75- 78 F4.2 mag Iamp [0.08/0.41] I band amplitude
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- VName Variable name, VNN
6 A1 --- Filt [VI] Observation filter ("V" or "I")
8- 20 F13.5 d HJD Heliocentric Julian date
22- 27 F6.3 mag magst [10/23] Standard magnitude
29- 34 F6.3 mag maginst Instrumental magnitude
36- 40 F5.3 mag e_maginst Error on the magnitude
42- 51 F10.3 s-1 Fref Reference flux (in ADU/s)
53- 58 F6.3 s-1 e_Fref Error on the reference flux (in ADU/s)
60- 69 F10.3 s-1 Fdiff Differential flux (in ADU/s)
71- 77 F7.3 s-1 e_Fdiff Error on the differential flux (in ADU/s)
79- 84 F6.4 --- p [0.04/1.15] Photometric scale factor
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Acknowledgements:
Armando Arellano Ferro, armando(at)astro.unam.mx
History
* 27-Apr-2015: First on-line version
* 02-Sep-2015: Positions in table4 corrected
(End) Armando Arelano Ferro [IA-UNAM Mexico], Patricia Vannier [CDS] 20-Apr-2015